I need an adjective to describe a class at school that has certain characteristics : it´s fun, active, full of energy, dynamic, where everyone participates. It´s a class "con onda" Obviously this is because of the teacher! In American English I suppose it´s a "cool" class. I need the British word to describe this kind of class. Thanks
To be honest, "fun" is about the best word for any class that someone actually enjoys!